Utilizing Zod for Recursive types and accurately inferring them

Here are my schemas:

export const barSchema = z.object({
  id: z.string(),
  foo: z.object(fooSchema),
});

export const fooSchema = z.object({
  id: z.string(),
  bar: z.object(barSchema),
});

export type BarType = z.infer<typeof barSchema>;

My challenge lies with barSchema, as it results in a TypeScript error:

'barSchema' is treated as 'any' due to lacking a type annotation and being referenced directly or indirectly in its own initializer.

I am determined to leverage the type inference feature. What steps should I take to achieve this goal and resolve the issue?

Answer №1

It appears that achieving what you are requesting might not be feasible according to the Zod documentation.

Even though it is possible to create a recursive schema in Zod, there seems to be an obstacle due to TypeScript's limitations, making it impossible for the type to be statically inferred. Instead, manual definition of the type and providing it as a "type hint" to Zod is necessary.

Zod Docs

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