Invalid HTTP header: Content-Type=undefined when using zValidator with JSON schema

[ilshm]

I am encountering an issue when using zValidator with a JSON schema in my Node.js application. Specifically, I am receiving the error "Invalid HTTP header: Content-Type=undefined" when trying to validate JSON data using the following schema and validation setup:

const schema = z.object({
  accessCode: z.string().optional()
})

zValidator(
  'json',
  schema
)

What I want to achieve:

1. Validate if the provided accessCode is a boolean.
2. Allow the request to proceed even if the request body is not provided.
3. Suppress all Zod errors and return only a 400 status code without any body in case of validation failure.

Is it possible to achieve these requirements with Zod and zValidator? If so, how can I modify my setup to accomplish this? If not, are there any workarounds or alternative approaches I can consider?

Thank you.

[stefnba]

Running into the same issue.

[movahhedi]

Me too. I'm using Hono as webserver.

[5ika]

Same with Hono. To avoid error, provide Content-Type header + some JSON payload as body.

Example:

 curl --location 'http://localhost:8000/notes' \
--header 'Content-Type: application/json' \
--data '{"accessCode": "12"}'