[Bug] MDXv2 support

[shilman]

What version of vite are you using?

2.9.8

System info and storybook versions

System:
OS: macOS 12.3.1
CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
Binaries:
Node: 16.13.0 - ~/n/bin/node
Yarn: 1.22.17 - ~/n/bin/yarn
npm: 8.1.0 - ~/n/bin/npm
Browsers:
Chrome: 101.0.4951.54
Firefox: 95.0.2
Safari: 15.4
npmPackages:
@storybook/addon-actions: ^6.5.0-beta.7 => 6.5.0-beta.7
@storybook/addon-essentials: ^6.5.0-beta.7 => 6.5.0-beta.7
@storybook/addon-interactions: ^6.5.0-beta.7 => 6.5.0-beta.7
@storybook/addon-links: ^6.5.0-beta.7 => 6.5.0-beta.7
@storybook/builder-vite: ^0.1.33 => 0.1.33
@storybook/mdx2-csf: ^0.0.3 => 0.0.3
@storybook/react: ^6.5.0-beta.7 => 6.5.0-beta.7
@storybook/testing-library: ^0.0.11 => 0.0.11

Describe the Bug

Storybook 6.5 introduces MDXv2 support as described here:

https://gist.github.com/shilman/6ff2d7e18db8846e8fc552fb432ae4f6

Link to Minimal Reproducible Example

https://github.com/shilman/vite-react-mdx2

Participation

• I am willing to submit a pull request for this issue.

[IanVS]

Thanks for the reproduction. I'm going to close this as a duplicate of #234.