ES6 method shorthand generator

shorthandGenerator.js

let o = {
  *createIterator(items) {
    for (let i = 0; i < items.length; i++) {
      yield items[i];
    }
  }
};

let it = o.createIterator([1, 2, 3]);

console.log(it.next());   // Object {value: 1, done: false}
console.log(it.next());   // Object {value: 2, done: false}
console.log(it.next());   // Object {value: 3, done: false}
console.log(it.next());   // Object {value: undefined, done: true}
console.log(it.next());   // Object {value: undefined, done: true}