Nuxt does not register classes in superjson after building

[Q16solver]

Environment

• Operating System: Windows_NT
• Node Version: v20.5.1
• Nuxt Version: 3.7.2
• CLI Version: 3.8.3
• Nitro Version: -
• Package Manager: npm@9.8.0
• Builder: -
• User Config: alias, css, build, nitro, vite, typescript, imports, runtimeConfig, modules, authJs, googleFonts, pinia, unocss
• Runtime Modules: @hebilicious/authjs-nuxt@0.3.0, @nuxtjs/google-fonts@3.0.2, @pinia/nuxt@0.4.11, @unocss/nuxt@0.55.7, @vueuse/nuxt@10.4.1
• Build Modules: -

Reproduction

https://stackblitz.com/edit/github-wn9aqn-sxviyo

1. Run npm run build
2. Run npm run start or node .output/server/index.mjs
3. Observe in Console tab that there is an error TRPCClientError: Unable to transform response from server.

Describe the bug

I want to use trpc with superjson for transforming json data and classes, but it seems like the registered classes work in development but after build, it only runs on one-side (the api endpoint returns the right json + metadata in the network request) but trpc fails to transform it on the server, most likely somehow not registering the classes.

linked discussion in trpc: trpc/trpc#4790

Additional context

No response

Logs

No response

[stackblitz]

Start a new pull request in StackBlitz Codeflow.

• github-wn9aqn-sxviyo (Open reproduction)

[kylegl]

Hey I am running into this as well. Any luck figuring it out?

[danielroe]

Would you see if you can reproduce this in pure Nitro (reproduction sandbox), and if so, raise there? 🙏

[kylegl]

Im not quite sure how to do that but i'll see what i can do

[danielroe]

Closing as I'm pretty sure this is a Nitro-related issue and not a Nuxt one. If it only recurs with Nuxt, let me know and I'll reopen it here.