storybook MDX - show code block of imported file

sb.mdx.file-code.js

import { Meta, Description, Props, Source, Canvas } from '@storybook/addon-docs/blocks';
import Comp from './Comp';
import CompRaw from '!raw-loader!./Comp.jsx';
import readme from '!raw-loader!./readme.md';

<Meta
  title="Comp/MDX"
  component={Comp}
/>

<Description markdown={readme} />

<br/>

<Canvas>
  <Story name="custom source" height="100px" parameters={{ docs: { source: { code: Comp } } }}>
    <code>Comp.jsx</code>
  </Story>
</Canvas>

Alternatively:

<details>
  <summary>The entrance point is <code>Comp.jsx</code></summary>
  <Source code={CompRaw} language='jsx' dark={true}/>
</details>