solution-js-promises-basic.js

function eligibleToDrink (age) {
  return new Promise((resolve, reject) => {
    if(age >= 18) {
      resolve(`Being ${age} years old, you are eligible to  drink.`);
    } else {
      reject(`${age} years is underage. Here is a fresh squeezed orange juice for you!`);
    }
  })
}

eligibleToDrink(15)
  .then(result => console.log(result))
  .catch(error => console.log(error))
// => 15 years is underage. Here is a fresh squeezed orange juice for you!
  
eligibleToDrink(18)
  .then(result => console.log(result))
  .catch(error => console.log(error))
// => Being 18 years old, you are eligible to  drink.