Using Run Function widget in Studio

// Note: The Studio Run Function Widget provides additional flexibility
// over the HTTP Request Widget, but either can be used to communicate
// with external APIs.

exports.handler = function (context, event, callback) {
  // Function parameters sent in from Studio Run Function Widget are
  // accessible from the Function `event` object, for example `event.key`
  // would access the value passed in for the key named `key`. In this
  // example, the Run Function widget is sending in the key `From`,
  // Value: {{trigger.message.From}} (which is the From Telephone Number)
  const from = event.From;

  const randomQuotes = ['Good', 'Day', 'Dachshund', 'Winston'];
  const randomArrayIndex = Math.floor(Math.random() * randomQuotes.length);

  // We send the results back to our Studio flow as an object so the
  // respective Studio Send Message or Say/Play widget can respond
  // with the results.
  return callback(null, {
    from,
    quote: randomQuotes[randomArrayIndex],
  });
};