[bug]: adding shadcn to existing remix project with dark mode creates bug

[HNx1]

Describe the bug

Hi just wanted to share a small bug I observed.

I had an existing project in remix with darkMode enabled i.e. in tailwind.config.ts I already had:

export default {
  ...
  darkMode: 'class'
}

Adding shadcn updated the config to this incorrect setting which broke dark mode

export default {
  ...
  darkMode: ['class', 'class']
}

Understand this is a niche and uncommonly faced issue - just pointing it out - and it may apply to other frameworks not just remix.

Affected component/components

Dark Mode

How to reproduce

1. Have existing tailwind/remix project with darkMode enabled but no shadcn
2. Install shadcn

Codesandbox/StackBlitz link

No response

Logs

System Info

Remix, Tailwind, is a code issue not an infrastructure issue.

Before submitting

• I've made research efforts and searched the documentation
• I've searched for existing issues