Zod v3 to v4 `zCustomQuery` migration breaking `useQuery` empty parameters

[adamk-au]

When you migrated from:

import { zCustomQuery } from 'convex-helpers/server/zod';  // Zod v3

To:

import { zCustomQuery } from 'convex-helpers/server/zod4'; // Zod v4

Functions defined without args now require {} to be passed in useQuery.

Take this example:

// convex/users.ts (updated to use Zod 4)

// import { zCustomAction, zCustomMutation, zCustomQuery } from 'convex-helpers/server/zod';
import { zCustomAction, zCustomMutation, zCustomQuery } from 'convex-helpers/server/zod4';

export const zQuery = zCustomQuery(query, ...);

export const getUser= zQuery({
  args: {},
  handler: async (ctx) => {
    //...
  },
});

// ListUsers.tsx (frontend)

import { useQuery } from 'convex-helpers/react';

// works when using `zCustomQuery` from Zod v3, but not Zod4
const userQuery = useQuery(api.users.getUser);

// workaround for Zod4 is to add `{}` args
const userQuery = useQuery(api.users.getUser, {});

[Nicolapps]

Thanks for reporting the issue! I can reproduce the issue, I’m working on a fix.