[to-markdown] Uncaught SyntaxError: mdast-builder/lib/src/index.js' does not provide an export named 'image'

[guillemcordoba]

I'm trying to import the customElementsManifestToMarkdown function in rocket like this:

```js script
import { customElementsManifestToMarkdown } from "@custom-elements-manifest/to-markdown";

But I'm getting this error:

Uncaught SyntaxError: The requested module './../../../mdast-builder/lib/src/index.js' does not provide an export named 'image'

**Expected behavior**
No error is given.