//Arrow Functions
console.log(identity); //Undefined  - Function is not hoisted
var identity = x => x ;
console.log(identity); //Function  or x => x
//console.log(new identity()); //Error - not a constructor

//Context Example
function test2() {
  console.log(this); //test2 - this refers to the object
  var test3 = x => console.log(this);
  function test4() {
    console.log(this);
  }
  test3(); //Refers to test2
  var b = new test4(); //Refers to test4
}

var a = new test2();