fetchStream.js

function fetchStream(url) {
  const req = new Request(url)

  return fetch(req).then(rs => {
    const reader = rs.body.getReader()

    return reader.read().then(({ done, value }) => {
      const decoder = new TextDecoder('utf-8')
      return decoder.decode(value)
    }).catch(err => console.log(`Could not fetch from ${url}!`, err))
  })
}

module.exports = fetchStream