index.js

exports.handler = async function http(req) {

  let html = `
<!doctype html>
<html lang=en>
  <head>
    <meta charset=utf-8>
    <title>Hi!</title>
    <link rel="stylesheet" href="https://static.begin.app/starter/default.css">
    <link href="data:image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" rel="icon" type="image/x-icon">
  </head>
  <body>

    <h1 class="center-text">
      <!-- ↓ Change "Hello world!" to something else and head on back to Begin! -->
      Hello world!
    </h1>

    <p class="center-text">
      Your <a href="https://begin.com" class="link" target="_blank">Begin</a> app is ready to go!
    </p>

  </body>
</html>`

  return {
    headers: {
      'content-type': 'text/html; charset=utf8',
      'cache-control': 'no-cache, no-store, must-revalidate, max-age=0, s-maxage=0'
    },
    statusCode: 200,
    body: html
  }
}

// Other example responses

/* Forward requester to a new path
exports.handler = async function http (req) {
  return {
    statusCode: 302,
    headers: {'location': '/about'}
  }
}
*/

/* Respond with successful resource creation, CORS enabled
let arc = require('@architect/functions')
exports.handler = arc.http.async (http)
async function http (req) {
  return {
    statusCode: 201,
    json: { ok: true },
    cors: true,
  }
}
*/