Promises

 Promises: Promises are a way to handle asynchronous operations in Node.js. They provide a cleaner and more organized way to handle complex asynchronous code flows. Here's an example of how to create and use a Promise in Node.js:

javascript

function getData() {

  return new Promise((resolve, reject) => {

    setTimeout(() => {

      const data = [1, 2, 3, 4, 5];

      resolve(data);

    }, 1000);

  });

}

getData()

  .then((data) => {

    console.log(data);

  })

  .catch((err) => {

    console.error(err);

  });