Function validateImportExport

src/language-markdown/embed.js:87–105

(ast, type)

}

function validateImportExport(ast, type) {
  const {
    program: { body },
  } = ast;

  // https://github.com/mdx-js/mdx/blob/3430138958c9c0344ecad9d59e0d6b5d72bedae3/packages/remark-mdx/extract-imports-and-exports.js#L16
  if (
    body.some(
      (node) =>
        !(
          node.type === "ImportDeclaration" ||
          node.type === "ExportDefaultDeclaration" ||
          node.type === "ExportNamedDeclaration"
        ),
    )
  ) {
    throw new Error(`Unexpected '${type}' in MDX.`);
  }
}

export default embed;