// Creating a promise
const fetchData = () => {
  return new Promise((resolve, reject) => {
     // Simulating an API call
     setTimeout(() => {
       const data = { id: 1, name: 'Product' };
       const success = true;

       if (success) {
         resolve(data); // Fulfilled with data
       } else {
         reject(new Error('Failed to fetch data')); // Rejected with error
       }
     }, 1000);
  });
};

// Using a promise
console.log('Fetching data...');

fetchData()
  .then(data => {
    console.log('Data received:', data);
    return data.id; // Return value is passed to the next .then()
  })
  .then(id => {
    console.log('Processing ID:', id);
  })
  .catch(error => {
    console.error('Error:', error.message);
  })
  .finally(() => {
    console.log('Operation completed (success or failure)');
  });

console.log('Continuing execution while fetch happens in background');