Import code from file not working with mdx-deck@4

[donysukardi]

I can't seem to get the following to work with mdx-deck@4. It's currently just showing blank screen. I don't think it's even reading the file.

<CodeSurfer>
    
```js 5:10 file=./file.js
```
    
</CodeSurfer>

[craig-o-curtis]

Same issue. Just installed today 2021.01.27
"mdx-deck": "^4.1.1"
"code-surfer": "^3.1.1",

[pomber]

See jxnblk/mdx-deck#670

[fobdy]

As I understand CodeSurfer is intended to use with mdx-deck@3 since it has a corresponding peer dependency: "mdx-deck": "3.0.10"