GraphQL builder 2.x does not allow native graphql type Upload

In GraphQL builder 1.x we could use the Upload type as argument from a mutation, but in 2.x this error message is displayed in the vtex link and the application does not run:

20:45:48.387 - error: App build failed with message: Type "Upload" not found in document.

I circumvented the problem by creating a scalar GraphqlUpload and using it. But I still had problems implementing my mutation that uses file upload because the type signature for the file argument (now GraphqlUpload) changed to something like (obtained from a console.log):

Upload {
  resolve: [Function (anonymous)],
  reject: [Function (anonymous)],
  promise: Promise {
    {
      filename: 'cart.csv',
      mimetype: 'text/csv',
      encoding: '7bit',
      createReadStream: [Function: createReadStream]
    }
  },
  file: {
    filename: 'cart.csv',
    mimetype: 'text/csv',
    encoding: '7bit',
    createReadStream: [Function: createReadStream]
  }
}

So I changed my implementation from:

const { createReadStream } = await fileArg

to:

const { createReadStream } = fileArg.file

And everything started working as before. However, I found it a little strange that I couldn’t use the Upload type directly anymore, and I believe it was a mistake.