I am using what you are saying in your doc. The one says should send a 400 status code.

But nothing happened when using it. Is the doc missing something ?

H3 version: 1.8.2
h3-zod's H3 version: 1.8.1

import { useSafeValidatedQuery } from "h3-zod";
import { z } from "zod";

export default defineEventHandler((event) => {
  const querySchema = z.object({ s: z.string() });
  const query = await useSafeValidatedQuery(event, querySchema);
                                              ^ Here

  if (!query.success)
    throw createError({ status: 400, message: "search_bad_query" });

  return query.data.s;
});

sorry for this is not an issue but a question, but I am new to zod and I've been trying to use formkit with the zod plugin in nuxt and wanted to use zod in the backend for validation. but I felt like using zod directly does the job.

so I was wondering what advantages does this package offer to my codebase and is it worth adding another dependency to my project?

First of all big thanks for actively maintaining this package.

Zod schema can use multiple refine validations, which produces type with nested ZodEffects.

Passing this schema to h3-zod gives TS error.

Reproduction:
https://codesandbox.io/s/ecstatic-surf-0u8wo2?file=/server/api/submit.post.ts

Tried this with [email protected], which handled this case OK, but further improvements were made down the line, changing the behaviour.

EDIT: Also the resulting body type is unknown,

Hi Thanks for you great job

It can be interesting to have a dedicated method to parse cookie content.

With the usage of getCookie() method if data is stored as json

zodSchema.parse(JSON.stringify(getCookie(event, 'cookie_name')))

Have you seen sidebase/sidebase#17 (comment) ?

First of all thanks for this very useful library.

The issue I'd like to report deals with using schema with type ZodEffects. Such schema can be produced by using z.refine on z.object as shown in example below.
This produces a TS error. See https://codesandbox.io/s/morning-bash-oi6h35?file=/server/api/submit.post.ts

import { useValidatedBody, z } from "h3-zod";
import { defineEventHandler } from "h3";
import dayjs from "dayjs";

const bodySchema = z
  .object({
    fromDate: z.string().optional(),
    toDate: z.string().optional()
  })
  .refine(
    (schema) =>
      !!schema.fromDate && !!schema.toDate
        ? dayjs(schema.fromDate).isBefore(schema.toDate)
        : true,
    "'fromDate' has to be before 'toDate'"
  );

export default defineEventHandler(async (event) => {
  const body = await useValidatedBody(event, bodySchema);
  return;
});

The solution would be to extend TQuery type like so:

type TQuery<U extends UnknownKeysParam = any> =
  | z.ZodObject<any, U>
  | z.ZodUnion<[TQuery<U>, ...TQuery<U>[]]>
  | z.ZodIntersection<TQuery<U>, TQuery<U>>
  | z.ZodDiscriminatedUnion<string, z.Primitive, z.ZodObject<any, U>>
  | z.ZodEffects<z.ZodTypeAny>; // <-- add this line

Would you like me to open a PR?

zod: 3.21.4
h3-zod: 0.4.0

Property 'error' does not exist on type 'SafeParseReturnType<ZodObject<{ email: ZodString; password: ZodString; firstName: ZodOptional; lastName: ZodOptional; name: ZodOptional<...>; tags: ZodArray<...>; }, UnknownKeysParam, ZodTypeAny, { ...; }, { ...; }>, { ...; }>'.   Property 'error' does not exist on type 'SafeParseSuccess<{ email?: string; password?: string; firstName?: string; lastName?: string; name?: string; tags?: string[]; }>'.

When doing a wrong body request, the router below return an status and error property, but typescript give us an error

export default defineEventHandler(async (event) => {
    const body = await zh.useSafeValidatedBody(event, {
        email: z.string().email(),
        password: z.string().min(8),
        firstName: z.string().optional(),
        lastName: z.string().optional(),
        name: z.string().optional(),
        tags: z.array(z.string()).min(1)
    });

    // typescript warning here
    console.log('body', body.error);

    return body;

});