Function transform

packages/challenge-builder/src/transformers.js:395–402

const getHtmlTranspiler = scriptOptions =>
  async function (file) {
    const transform = async contentDocument => {
      const documentElement = contentDocument.documentElement;
      await Promise.all([
        transformSASS(documentElement),
        transformScript(documentElement, scriptOptions)
      ]);
      return documentElement.innerHTML;
    };

    const contents = await parseAndTransform(transform, file.contents);
    return transformContents(() => contents, file);