es6 - Cannot read property '_parse' of undefined

Hey all ! Thanks for the good work.

In my project, I am using zod@3.8.1 and for some technical limitations I need to manipulate z objects into an es6 codebase. More specifically the pick operator.

So I have my object definition in TS package (built to es6) :

export const Model = z.object({
  id: z.string().uuid(),
  name: z.string()
})

And in my es6 code I want to use a subset of this Model. Naively I do the following

import { Model } from '@mystuff/models'

const ModelSubset = Model.pick({
  name: true
})

The inferred type of ModelSubset looks right. But on the runtime, when I do this :

const myValidModel = ModelSubset.parse({
  name: 'Kikoo'
})

zod throws me :

TypeError: Cannot read property '_parse' of undefined

Redefining the object in the es6 package works though… 🤔

So, what am I missing ?

Thank you for reading and be well !

[LucasForster]

Hey!

zod throws me :

TypeError: Cannot read property '_parse' of undefined

I ran into the same error message and found this issue. Now while my problem is likely a different another one, I thought sharing this might still help others ending up here.

Essentially what I was doing is exporting a schema from one file, using it in another one to compose another schema, and then importing that composed schema back into the first file. While there isn’t a cyclic dependency per se, it causes the mentioned error at runtime.

See this CodeSandbox for an example: https://codesandbox.io/s/patient-butterfly-hsg3q?file=/src/index.ts The message isn’t as descriptive as in my local (larger) project, but removing this exact kind of import solved it for me. (Maybe this is generally “wrong” in terms of my tsconfig or simply unsupported by zod and I don’t know it, but I would intuitively expect it to work 🙈.)

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