Midburnerot omg sale shuffle from array of emails

midburnerot_omg.js

/* 
 * Based on Fisher-Yates (Aka Knuth) shuffle
 * https://github.com/Daplie/knuth-shuffle
*/
Array.prototype.shuffle = function() {
  let currentIndex = this.length, temporaryValue, randomIndex;

  // While there remain elements to shuffle...
  while (0 !== currentIndex) {

    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex -= 1;

    // And swap it with the current element.
    temporaryValue = this[currentIndex];
    this[currentIndex] = this[randomIndex];
    this[randomIndex] = temporaryValue;
  }

  return this;
};

let omgPeople = ["person1@gmail.com","person2@gmail.com", "person3@gmail.com"];
omgPeople.shuffle();
let winners = omgPeople.slice(0,150);
console.log(winners);