Environment

• Operating System: Linux
• Node Version: v18.20.3
• Nuxt Version: 3.13.0
• CLI Version: 3.12.0
• Nitro Version: 2.9.7
• Package Manager: npm@10.2.3
• Builder: -
• User Config: compatibilityDate, devtools
• Runtime Modules: -
• Build Modules: -

Reproduction

https://stackblitz.com/edit/github-kayd36?file=utils%2Fget.ts

Describe the bug

If you return a Date from a api route the type doesn't get converted to string

Additional context

No response

Logs

No response