Example of using async and await in a Vercel serverless function

async_await_serverless.js

const unravel = async (url) => {
  const response = await fetch(url)
  return response
}

export default async (req, res) => {
  const response = await unravel(req.query.url)
  res.statusCode = 200
  res.setHeader('Content-Type', 'application/json')
  res.end(JSON.stringify({ response: response }))
}