Using json() and parseBody() same times

[Ily1606]

What version of Hono are you using?

4.6.18

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

Nodejs

What steps can reproduce the bug?

RequestKernel.ts class

public static async processData(request: HonoRequest) {
  request.input = await Promise.allSettled([
    request.json(),
    request.parseBody({
      dot: true,
    })
  ]).
  then((dataProcessed) => {
    return dataProcessed.reduce((carry, item) => {
      if(item.status === 'fulfilled') {
        return {
          ...carry,
          ...item.value
        }
      }

      return carry;
    }, {
      ...request.query()
    })
  })

  return request;
}

Request.test.ts

const rawRequest = new Request(getUrl(routeMock.path), {
  method: "POST",
  body: createFormData({
    email: '[email protected]',
    password: 'password123',
    name: 'John Doe',
  })
})
const request = new HonoRequest(rawRequest);
const requestInstance = await RequestKernel.processData(request);

What is the expected behavior?

request.input should be

{
  email: '[email protected]',
  password: 'password123',
  name: 'John Doe',
}

(Parsed from FormData, json is error will be skipped)

What do you see instead?

Inside allSettled().then()
I got Array<PromiseResult> with a same error:

"No number after minus sign in JSON at position 1"

But I'm using parseBody(), json() as sequence, it's working

const test = request.parseBody({
  dot: true,
}) // working

request.input = await Promise.allSettled([
  request.json(),
])

Additional information

I'm using Nodejs v20.17.0

[Ily1606]

I see #cachedBody() in the following link:

hono/src/request.ts

Line 229 in 093d3fd

return (bodyCache[key] = raw[key]())

It is used as a "computed" function to get and set data in bodyCache.

In my case, I am posting FormData, but when I try to parse it into JSON, the logic of #cachedBody() always returns the first result of the parsing process, including any parsing errors.

[yusukebe]

@lmcarreiro

Can you provide a minimal project to reproduce it?