Types of typiaValidator in typia-validator are not compatible with hono 4.x

[jirutka]

Which middleware has the bug?

@hono/typia-validator

What version of the middleware?

0.1.0

What version of Hono are you using?

4.6.17

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

Node.js

What steps can reproduce the bug?

I noticed two problems:

1. typia.http.createValidateQuery doesn’t work, it throws TypeError: xxx.get is not a function (in the most basic case, so reproduction is trivial). (My fault, I imported typiaValidator from @hono/typia-validator instead of @hono/typia-validator/http.)

2. There’s a type error in packages/typia-validator/src/index.ts:32-51:

Type 'MiddlewareHandler<E, P, { in: { [K in Target]: K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }; }; out: { [K_1 in Target]: any; }; }>' is not assignable to type 'MiddlewareHandler<E, P, V>'.
  Types of parameters 'c' and 'c' are incompatible.
    Type 'Context<E, P, V>' is not assignable to type 'Context<E, P, { in: { [K in Target]: K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }; }; out: { [K_1 in Target]: any; }; }>'.
      Type 'V' is not assignable to type '{ in: { [K in Target]: K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }; }; out: { [K_1 in Target]: any; }; }'.
        Type '{ in: { [K in Target]: O; }; out: { [K in Target]: O; }; }' is not assignable to type '{ in: { [K in Target]: K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }; }; out: { [K_1 in Target]: any; }; }'.
          Types of property 'in' are incompatible.
            Type '{ [K in Target]: O; }' is not assignable to type '{ [K in Target]: K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }; }'.
              Type 'O' is not assignable to type 'K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }'.
                Type 'OutputType<T>' is not assignable to type 'K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }'.
                  Type 'unknown' is not assignable to type 'K extends "json" ? unknown : { [x: string]: ValidationTargets[K][string]; }'.ts(2322)

And I cannot figure out how to fix it, this type is incredibly complex.

What is the expected behavior?

No response

What do you see instead?

No response

Additional information

No response

[yusukebe]

@jirutka Thank you for raising the issue.

Hi @dworznik, can you handle this?