promises2.js

'use strict;


const lotteryPromise = new Promise(function (resolve, reject) {
  console.log('lottery draw is happening 🔮');
  setTimeout(function () {
    if (Math.random() >= 0.5) {
      resolve('You WIN 💰');
    } else {
      reject(new Error('You lost your money 😔'));
    }
  }, 2000);
});

lotteryPromise.then(res => console.log(res)).catch(err => console.error(err));

// Promisifying setTimeout

const wait = seconds => {
  return new Promise(resolve => {
    setTimeout(resolve, seconds * 1000);
  });
};


wait(2)
  .then(() => {
    console.log('I waited for 2 seconds');
    return wait(1);
  })
  .then(() => console.log('I waited for 1 second'));