Build a webpack bundle from a stream

example.js

import webpack from 'webpack'
import {Readable} from 'stream'

const entryStream = new Readable()
entryStream.push(`
  import { configure } from '@kadira/storybook';

  function loadStories() {
    require('./story1.js');
    require('./story2.js');
    require('./story3.js');
  }

  configure(loadStories, module);
`)
entryStream.push(null)

var compiler = webpack(/* config */)

const bundleStream = compiler.transformStream(entryStream)

fs.writeFile('config.js', bundleStream)

For instance in react-storybook, the config.js file must require one by one each story.

In order to avoid doing so manually i'm preparing a tool that generates it according to conventions.
I could still save the generated config.js file and use the saved file as the entry. However it does not really feel node-y.

I was wondering if it was possible to do somehting like this with webpack. I haven't found anything about it yet.

I hope it's a bit clearer if I put it this way :)