ES6 Generator FizzBuzz

es6-fizzbuzz.js

 let fizzbuzz = function*(){
      for (var val = 1; val < 100; val++) {
        if(val % 15 === 0){
            yield "FizzBuzz";
        }
        else if(val % 3 === 0){
            yield "Fizz";
        }
        else if(val % 5 === 0){
            yield "Buzz";
        }
        yield val;
      }
    }();

    for (var n of fizzbuzz) {
      console.log(n);
    }

Doesn't work on my machine

My error