//This code does not work:
var x = {
  get: (msg1) => (msg2) => {
    return this.val; //this refers to window here.
  },
  val: "Vorcan"
}

console.clear();
//Prints undefined
console.log(x.get("")(""));


//This code works
var x = {
  get: function(msg1){
    return (function(msg2){
      return this.val;
    }).bind(this);
  },
  val: "Vorcan"
}

console.clear();
//Prints "Vorcan"
console.log(x.get("")(""));