hono.request method does not work in combination with hono/body-limit

[qoomon]

What version of Hono are you using?

4.3.2

What runtime/platform is your app running on?

Node

What steps can reproduce the bug?

import {Hono} from 'hono'
import {bodyLimit} from 'hono/body-limit'

const app = new Hono()
app.use(bodyLimit({maxSize: 100 * 1024})) // 100kb

app.post('/hello', async (context) => {
  return context.json({message: 'Hello, World!'})
})

const response = await app.request('/hello', {
  method: 'POST',
  body: JSON.stringify({foo: 'bar'}),
})
console.log('response:', response.status)

What is the expected behavior?

response: 200

What do you see instead?

TypeError: RequestInit: duplex option is required when sending a body.
    at new Request (node:internal/deps/undici/undici:5082:19)
    at bodyLimit2 (file:///.../node_modules/hono/dist/middleware/body-limit/index.js:48:17)
    at dispatch (file:///.../node_modules/hono/dist/compose.js:29:23)
    at file:///.../node_modules/hono/dist/compose.js:6:12
    at file:///.../node_modules/hono/dist/hono-base.js:188:31
    at Hono.dispatch (file:///.../node_modules/hono/dist/hono-base.js:198:7)
    at Hono.fetch (file:///.../node_modules/hono/dist/hono-base.js:201:17)
    at Hono.request (file:///.../node_modules/hono/dist/hono-base.js:213:17)
    at <anonymous> (/.../sandbox.ts:12:28)
    at ModuleJob.run (node:internal/modules/esm/module_job:235:25)
response: 500

Additional information

Same app set up is working without any error when started as a node server and fetch response, see example below

import {Hono} from 'hono'
import {bodyLimit} from 'hono/body-limit'
import {serve} from '@hono/node-server'

const app = new Hono()
app.use(bodyLimit({maxSize: 1024 * 1024})) // 1mb

app.post('/hello', async (context) => {
  return context.json({message: 'Hello, World!'})
})

// const response = await app.request('/hello', {
//   method: 'POST',
//   body: JSON.stringify({foo: 'bar'}),
// })
// console.log('response:', response.status)

serve({
  fetch: app.fetch,
  port: 3000,
})

const response = await fetch('http://localhost:3000/hello', {
  method: 'POST',
  body: JSON.stringify({foo: 'bar'}),
})
console.log('response:', response.status)

[qoomon]

I could fix the error, if I do the same as in body-limit test file by prefix my test files with following workaround, see below.

I don't understand why it works. do you have any clue why it's needed for app.request?
Can this fix be done within app.request?

hono/src/middleware/body-limit/index.test.ts

Lines 4 to 13 in 4cd2dff

	const GlobalRequest = globalThis.Request
	globalThis.Request = class Request extends GlobalRequest {
	constructor(input: Request | string, init: RequestInit) {
	if (init) {
	// eslint-disable-next-line @typescript-eslint/no-explicit-any
	;(init as any).duplex ??= 'half'
	}
	super(input, init)
	}
	} as typeof GlobalRequest

[mvares]

@qoomon, if you want, I can work on it later

[qoomon]

That would be awesome, thank you

[fzn0x]

This is issue from nodejs, I don't know which part of Hono requires this, I will also take a look on this

[fzn0x]

Looks like we need to add the duplex option in `body: Readable stream