Handle files in middleware with different unknown input field names with skipper (sails.js)

I'm trying to upload files from a submitted form that has multiple image files from different input names.

For example, asumming a multipart form with text inputs and file inputs, and its not practical to group all file inputs with the same name, e.g images[]

<form ...>
 some text inputs...
 <input type='file' name='logo'/>
 <input type='file' name='image-1'/>
 <input type='file' name='image-2'/>
</form>

I want to create an express/sails middleware to handle the uploads, so i could access them directly on my controllers.

If i do this (Assuming that upload method on req.file() is promisified)

   async function(req, res, next){
      const maxTimeToBuffer = 9500
      const dirname = '/some-upload-path'
      const uploads = [
        await req.file('logo').upload(dirname, maxTimeToBuffer) 
        await req.file('image-1').upload(dirname, maxTimeToBuffer)
        await req.file('image-2').upload(dirname, maxTimeToBuffer)
      ]
      // attaching the uploads to the request body ...
      next()
  }

This will throw an error: EMAXBUFFER: An Upstream (images-1) timed out before it was plugged into a receiver. It was still unused after waiting 9500ms. You can configure this timeout by changing themaxTimeToBufferoption.

It doesn't matter if i increase the maxTimeToBuffer to 30000 even on the skipper module itself.

Since trying to process each file in a sequential fashion throws an error no matter what, processing them in parallel works, as long as i know the input field names.

   async function(req, res, next){
      const maxTimeToBuffer = 9500
      const dirname = '/some-upload-path'
      const uploads = await [
        req.file('logo').upload(dirname, maxTimeToBuffer) 
        req.file('image-1').upload(dirname, maxTimeToBuffer)
        req.file('image-2').upload(dirname, maxTimeToBuffer)
      ]
      // attaching the uploads to the request body ...
      next()
  }

Now the question is, how do i achieve the same thing on the last snippet but without knowing in advance the input fields. Something like this

async function(req, res, next){
     const maxTimeToBuffer = 9500
     const dirname = '/some-upload-path'
     const uploads = await req._fileparser.upstreams
     // attaching the uploads to the request body ...
     next()
}

The thing is that req._fileparser.upstreams gets updated every time it receives a new stream and that would only happen after the first image is fully received (sequential) but if i wait for the upstreams array to be complete i will get a timeout error too.

Is there any workaround for this?

I know there is a lot to digest, if you need further clarification let me know. Any idea is appreciated

via Zagen