getPathToStories.js

import path from 'path'
import fs from 'fs'

export default root => {
  const stories = []

  const loopFiles = context => {
    fs.readdirSync(context).forEach(name => {
      const filepath = path.join(context, name)
      if (fs.lstatSync(filepath).isDirectory()) {
        loopFiles(filepath)
      }

      if (/story\.js$/.test(name)) {
        stories.push(filepath)
      }
    })
  }

  loopFiles(root)
  return stories
}