Handle Promise objects

console.log("This is the first line of code in app.js.");
// Keep the line above as the first line of code

// Write your code here:
const usingSTO = () => {
  console.log("Today is a happy day!");  //this line will be printed last in the output because of the delay
};

setTimeout(usingSTO, 2500); //pass usingSTO() without invoking it

// Keep the line below as the last line of code:
console.log("This is the last line of code in app.js.");

/*
Output will show:
$ node app.js
This is the first line of code in app.js.
This is the last line of code in app.js.
Today is a happy day!
$
*/