Generated "enhance" function not found. Please run zenstack generate first.

[Izag-Larm]

Description and expected behavior
I started the development of a Nuxt application and after defining my zenstack schema, I wrote an API route for the server to retrieve a file entity from the database. But I get an error after having at the execution level of enhance(prisma). However I have already run npx zenstack generate and npx prisma db push.

Screenshots
zmodel

global prisma client

route api

Environment (please complete the following information):

• ZenStack version: 2.11.5
• Prisma version: 6.3.x
• Database type: Postgresql

Additional context
I running nuxt with compatibility version 4

[ymc9]

Hi @Izag-Larm , just to confirm, do you have any regex validation patterns in the ZModel? We recently discovered an issue that invalid regex patterns can cause the "enhance function not found" error.

[sanny-io]

@ymc9 I am also having this issue. I'm using regex in the zmodel, but the regex appears fine to me, and the same error happens when I remove the regex.

color       String               @default('#787878') @regex('^#(?:[0-9a-fA-F]{3}){1,2}$')

Interestingly, the error only happens when I run my app with tsx. If I build it and run it with node, it works fine. Additionally, the error does not appear in my Next.js app at all - it only appears in my express app.

I know you can't do much without a repro, so I'll see if I can set one up and open another issue if need be.

[Izag-Larm]

Hi @Izag-Larm , just to confirm, do you have any regex validation patterns in the ZModel? We recently discovered an issue that invalid regex patterns can cause the "enhance function not found" error.

I don't have any regex validation pattern in my zmodel.

[Izag-Larm]

I tried to rebuild my zmodel piece by piece, trying to identify each time what could cause the problem. And I get the error when I try to apply gte() validation on a field of one type.

[Kylyi]

I am having the same issue in Nuxt@3.15.4.

All works well in dev but once built, the following happens:
[nuxt] [request error] [unhandled] [500] Generated "enhance" function not found. Please run zenstack generate first.

Somehow, when I downgrade from node@22 to node@20, it works perfectly fine.

[ymc9]

Thanks for the comments. Does anyone have a sharable repro project?

[Kylyi]

Yup, https://github.com/Kylyi/nuxt-zenstack.

Just make sure to use node@22.
It should work in dev mode.

[Kylyi]

This is actually starting to be a bigger issue as it somehow breaks in docker as well in some cases, even when using node@20. WIll ty to prepare another repro.

[alfredosepulveda]

Had same issue with zenstack v2.12.1 node v23 ando v22. Using node v18 fixed it.

[Kylyi]

It seems like it's dependent on the Node specific version heavily.

Using the following Dockerfile works:

while the following results in the [nuxt] [request error] [unhandled] [500] Generated "enhance" function not found. Please run zenstack generate first. issue.

[sslotnick]

I just encountered this issue going from node 20.18.3 to 20.19.0. Using the flag --no-experimental-require-module fixes it.

$ pnpm tsx --version
tsx v4.19.3
node v20.19.0
$ pnpm tsx --no-experimental-require-module ./scripts/myscript.ts
...
$ pnpm tsx ./scripts/myscript.ts
...
        throw new Error('Generated "enhance" function not found. Please run `zenstack generate` first.');
              ^
...

[ymc9]

I made a few tries with node 20.19.0 as @sslotnick indicated:

• tsx ran into the issue, @sslotnick 's workaround worked for me
• Nuxt ran into the issue as @Kylyi reported
• ts-node worked fine, compiling with tsc and then running directly with node worked fine
• Next.js worked fine

So it seems later node versions broke something related loading ESM with require, however the issue only happens with certain bundler (nuxt) and nodejs loaders (tsx) ...

I don't have further insight into the issue so far, and please use @sslotnick 's workaround for now.

[genu]

I'm a little confused about the workaround from @sslotnick Where exactly does --no-experimental-require-module need to be added?

For nuxt, the application is started with node .output/server/index.mjs after a build which causes the issue.

[bbozzay]

I'm also having this issue with a sveltekit project when upgrading from 2.14.2 to 2.15. Issue persists even when using node 18. I've removed regex from the zmodel to rule that out as an issue

[genu]

I don't think this is related necessarily to using @regex. Issue still persists on my end.