How to get metadata via mdx.macro for create-react-app?

[lefnire]

The create-react-app sample uses the following:

import {importMDX} from 'mdx.macro'
const Content = lazy(() => importMDX('./Content.mdx'))

With const Content = pulling out the component to be rendered, how to I get metadata as per the other examples import MDXDocument, {metadata} from 'posts/post.mdx'?

[ChristianMurphy]

See #1355 (reply in thread)
which shows how to use the mdx webpack loader with CRA, to get the same results as https://mdxjs.com/getting-started#exports