Using the new feature of ES9: promise.prototype.finally()

finally.js

/**
 * PROMISE.PROTOTYPE.FINALLY()
 * - Always executed
 * - Allow to execute some code if the promise is successful or not successful
 * - Similar to finally {} on synchronous code  (try/catch/finally)
 */

// example
fetch('https://randomuser.me/api/?results=1')
  .then(data => data.json())
  .then(jsonData => console.log(jsonData))
  .catch(error => console.error(error))
  .finally(() => console.log('finished'))