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Using Run Function widget in Studio

This Function showcases how you can send information to your Twilio Function from Twilio Studio's Run Function Widget and respond back with JSON. Twilio Studio will parse the returned JSON and incorporate it into your flow.

// 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, {
    quote: randomQuotes[randomArrayIndex],
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