Function checkNodes

packages/markmap-html-parser/src/index.ts:200–251

($els: Cheerio<any>, node?: IHtmlNode)

  }

  function checkNodes($els: Cheerio<any>, node?: IHtmlNode) {
    $els.each((_, child) => {
      const $child = $(child);
      const rule = Object.entries(options.selectorRules).find(([selector]) =>
        $child.is(selector),
      )?.[1];
      const result = rule?.({ $node: $child, $, getContent });
      // Wrapper
      if (result?.queue && !result.nesting) {
        checkNodes(result.queue, node);
        return;
      }
      const level = getLevel(child.tagName);
      if (!result) {
        if (level <= Levels.H6) {
          skippingHeading = level;
        }
        return;
      }
      if (skippingHeading > Levels.None && level > skippingHeading) return;
      if (!$child.is(options.selector)) return;
      skippingHeading = Levels.None;
      const isHeading = level <= Levels.H6;
      let data = {
        // If the child is an inline element and expected to be a separate node,
        // data from the closest `<p>` should be included, e.g. `<p data-lines><img /></p>`
        ...$child.closest('p').data(),
        ...$child.data(),
      };
      let html = result.html || '';
      if ($child.is('ol>li') && node?.children) {
        const start = +($child.parent().attr('start') || 1);
        const listIndex = start + node.children.length;
        html = `${listIndex}. ${html}`;
        data = {
          ...data,
          listIndex,
        };
      }
      const childNode = addChild({
        parent: node || getCurrentHeading(level),
        nesting: !!result.queue || isHeading,
        tagName: child.tagName,
        level,
        html,
        comments: result.comments,
        data,
      });
      if (isHeading) headingStack.push(childNode);
      if (result.queue) checkNodes(result.queue, childNode);
    });
  }
}

export function convertNode(htmlRoot: IHtmlNode) {