Change locale for validation errors in zod

[DevShaded]

I am using zod for generating schema from openapi, and I was wondering how can I change the language/locale for zod? In zod you can change the locale within a config, but how can I change the locale within the config for hey api?

[dosubot[bot]]

Hi @DevShaded! I'm Dosu and I’m helping the openapi-ts team.

hey-api/openapi-ts does not currently provide a way to configure the Zod locale or error messages through its config. To localize Zod validation errors, you need to use Zod’s own localization features—such as setting a custom error map—directly in your application code, after generating the schemas with hey-api. This usually means calling z.setErrorMap() before performing validation. This step is not managed by hey-api itself, so you’ll need to handle it wherever you use the generated schemas. For more on Zod error maps, see the Zod documentation for examples and details.

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[mrlubos]

@DevShaded I'm not sure I understand the ask, why can't you change the locale in Zod? What would be the benefit of doing it in Hey API? https://zod.dev/error-customization#internationalization

[DevShaded]

I am not really sure on how to do that. Do I create a zod config file or? Haven't worked with auto generated zod schema's from openapi before. Thats why.

[mrlubos]

It should be the same workflow, this package doesn't implement its own API on top of Zod (that's the neat thing about it). Let me know if it doesn't work and I can have a look