JavaScript Function: Custom Error on an empty array

function validateArrayNotEmpty(arr) {
  if (arr.length === 0) {
    throw new Error('Array is empty!');
  }
}

// Example usage:
try {
  const nums1 = [1, 2, 3, 4];
  validateArrayNotEmpty(nums1); // Valid non-empty array

  const nums2 = [];
  validateArrayNotEmpty(nums2); // Throws an error
} catch (error) {
  console.log('Error:', error.message);
}

 Output:

"Error:"
"Array is empty!"