TypeScript Error TS2345: Argument of type 'T' is not assignable to parameter of type 'ZodType<any, ZodTypeDef, any>'

[Mudong-17]

Which middleware has the bug?

@hono/zod-validator

What version of the middleware?

0.4.3

What version of Hono are you using?

4.7.2

What runtime/platform is your app running on? (with version if possible)

bun

What steps can reproduce the bug?

I'm encountering a TypeScript error when attempting to use the zValidator function from the @hono/zod-validator package. The error message is as follows:

Argument of type 'T' is not assignable to parameter of type 'ZodType<any, ZodTypeDef, any>'.
  Type 'ZodType<any, ZodTypeDef, any>' is missing the following properties from type 'ZodType<any, ZodTypeDef, any>': "~standard", "~validate"ts(2345)
(parameter) schema: T extends ZodSchema

Code Example:

import { ZodSchema } from "zod";
import type { ValidationTargets } from "hono";
import { zValidator as zv } from "@hono/zod-validator";

export const zValidator = <
  T extends ZodSchema,
  Target extends keyof ValidationTargets
>(
  target: Target,
  schema: T
) =>
  zv(target, schema, (result, c) => {
    if (!result.success) {
      throw new HTTPException(400, { cause: result.error });
    }
  });

tsconfig

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "compilerOptions": {
    "strict": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "module": "ESNext",
    "moduleResolution": "Bundler",
    "resolveJsonModule": true,

    "esModuleInterop": true,
    "isolatedModules": true,


    "allowJs": true,
    "skipLibCheck": true,
    "noEmit": true,
    "experimentalDecorators": true,
    "target": "ESNext"
  }
}

What is the expected behavior?

No response

What do you see instead?

No response

Additional information

No response

[yusukebe]

@Mudong-17

We don't expect to use that syntax and don't support it. Please use it as written in the README.

import { z } from 'zod'
import { Hono } from 'hono'
import { zValidator } from '@hono/zod-validator'

const app = new Hono()

const schema = z.object({})

app.get('/', zValidator('json', schema), (c) => {
  return c.json({})
})