Moment.js Sandbox

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.2.1/moment.min.js"></script>

JavaScript

someFunction = () => {
 	var items = []
  var currentDate = moment('12');
  new Array(48).fill().map((acc, index) => {
    items.push(currentDate.format('h:mm A'))
    currenDate = currentDate.add(30, 'minutes');
  })
  return items
}

console.log(someFunction());