title: how get max date from arraylist in typescript
body: <p>I need max date from the list of array elements: start_time property</p>
  
  <pre><code>{
    "jobs" : [ {
      "job_id" : 10,
      "users" : [ {
        "user_id" : 11,
        "data_points" : [ {
          "duration" : 0,
          "start_time" : "2017-07-20T04:04:43.000Z",
          "datastream" : "GENERIC",
          "username" : "abc@gmail.com.com"
        }, {
          "duration" : 0,
          "start_time" : "2017-07-21T04:04:43.000Z",
          "datastream" : "GENERIC",
          "username" : "rs022015@gmail.com.com"
        }, {
          "duration" : 0,
          "start_time" : "2017-07-20T04:04:43.000Z",
          "datastream" : "GENERIC",
          "username" : "rs022015@gmail.com.com"
        } ]
      } ]
    } ]
  }
  </code></pre>