A single c.body() return in a handler overrides all other returns

[cybercoder-naj]

What version of Hono are you using?

4.5.5

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

Bun 1.1.38

What steps can reproduce the bug?

import { Hono } from 'hono';

const app = new Hono()
  .get('/hello', async c => {
    const time = Date.now();

    if (isWinter(time))
      return c.text('You cannot use this winter', 400)
    if (isSummer(time))
      return c.text('You cannot use this summer', 400)

    return c.body(null, 204) 
  })

Why use body in the first place? Because 204 is a ContentlessStatusCode and c.text or c.json no longer accept this as a valid status code.

What is the expected behavior?

The return type of app.hello.$get() should be Promise<ClientResponse<'You cannot use this winter', 400, 'text'> | ClientResponse<'You cannot use this summer', 400, 'text'> | ClientResponse<null, 204, string>>

What do you see instead?

The return type of app.hello.$get() is actually Promise<ClientResponse<{}, StatusCode, string>>

Additional information

No response

[lewisedc]

I'm also running into this issue.

I believe the Hono version however should be 4.6.15 which was when the StatusCode change was implemented.

[askorupskyy]

Hey guys, thanks for bringing this up. I did some investigation and I think I know where this could be coming from. Let me see what I can do