Test for primality for phone numbers from all the promises

index.js

phonePromise.then(data => {
  let verifiedPrimes = [];

  data.forEach(twilioObject => {
    twilioObject.available_phone_numbers.forEach(e => {
      if (primality(e.phone_number.slice(2)) && !verifiedPrimes.includes(e.phone_number.slice(2))) {
        verifiedPrimes.push(e.phone_number.slice(2));
      }
    });
  });

  console.log(verifiedPrimes);
});