APP.JS
'use strict'

const suits = ['Hearts', 'Diamonds', 'Clubs', 'Spades']
const values = [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]

const Deck = require('./Deck')
const Player = require('./Player')

let deck = new Deck()
let player = new Player()
deck.createDeck(suits, values)
console.log(deck.cards)
deck.shuffle()

console.log(player)

PLAYER.JS
'use strict'

class Player {
  constructor () {
    this.hand = []
  }

  playerAmount (players) {
      for (let i = 0; i < players; i++) {
          new Player
      }
  }
}

let player = new Player()
module.exports = Player

DECK.JS
'use strict'

const suits = ['Hearts', 'Diamonds', 'Clubs', 'Spades']
const values = [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]

const Card = require('./Card')

class Deck {
  constructor () {
    this.cards = []
  }

  createDeck (suits, values) {
    for (const suit of suits) {
      for (const value of values) {
        this.cards.push(new Card(suit, value))
      }
    }
    return this.cards
  }

  shuffle () {
    let i = this.cards.length // 52, Arrayens längd
    console.log(i)
    let j // Random tal mellan 0-51
    let temp // för att byta värdet
    while (--i > 0) { // sänker i till 51 direkt, tills mindre än 1
      j = Math.floor(Math.random() * (i + 1)) // tal mellan 0- 51
      // console.log(j)
      temp = this.cards[j]
      // console.log(temp)
      this.cards[j] = this.cards[i]
      this.cards[i] = temp
    }
  }
}

module.exports = Deck

CARDS.JS
'use strict'

class Card {
  constructor (suit, value) {
    this.suits = suit
    this.value = value
  }
}

module.exports = Card