The Credit Card Validator

To Install

1. Make a FORK - NOT A CLONE - of this repo, so you have a version of this challenge.
2. git clone your fork of the repo
3. Run the following:

$ code .
$ yarn
$ yarn start

The Challenge

You're starting your own credit card business. You need to come up with a new way to validate credit cards with a simple function called validateCreditCard that returns true or false.

Here are the rules for a valid number:

1. Number must be 16 digits; all of them must be numbers.
2. The final digit must be even.
3. The sum of all the digits must be greater than 16.

Bonus challenge 🔥

Add functionality so that you must have at least two different digits represented (all of the digits cannot be the same)

Examples

console.log(validateCreditCard("9999777788880000")); // => true
console.log(validateCreditCard("6666666666661666")); // => true
console.log(validateCreditCard("a92332119c011112")); // => false
console.log(validateCreditCard("4444444444444444")); // => false
console.log(validateCreditCard("1211111111111112")); // => true
console.log(validateCreditCard("1111111111111110")); // => false