title: filter object by key and its items
body: <p>I have an object that I would like to filter it's keys..</p>
  
  <p>Im trying to filter the object by an ID, like so:</p>
  
  <pre><code>let myKeys = Object.keys(data).filter(function(key) {
          //console.log(data[key]);
          if(parseInt(key) === parseInt(vm.system_id)) {
              return data[key];
          }
      });
  
      console.log(myKeys);
  </code></pre>
  
  <p>This works, partialy - im getting the key, however, im not getting all the data/items under this item im filtering out</p>
  
  <p>The object im filtering is one similar to this one:</p>
  
  <pre><code>{
  "646": [{
          "id": 52144,
          "timestamp": "2017-08-17T14:10:23Z",
          "type": "alarm",
          "code": 210,
          "title": "",
          "description": "",
          "remedy": "",
          "appeared": "2017-08-17T14:10:09Z",
          "disappeared": null,
          "acknowlegded": null,
          "solved": null,
          "system_name": "CG-MX19D7K5C1",
          "system_id": 646,
          "system_device_id": 458,
          "stream": "cu351.alarm_code"
      }
  ],
  "693": [{
          "id": 51675,
          "timestamp": "2017-08-16T13:59:55Z",
          "type": "alarm",
          "code": 215,
          "title": "",
          "description": "",
          "remedy": "",
          "appeared": "2017-08-16T13:59:57Z",
          "disappeared": null,
          "acknowlegded": null,
          "solved": null,
          "system_name": "Demo 07122016",
          "system_id": 693,
          "system_device_id": 371,
          "stream": "cu351.alarm_code"
      }, {
          "id": 51677,
          "timestamp": "2017-08-16T13:59:57Z",
          "type": "alarm",
          "code": 214,
          "title": "",
          "description": "",
          "remedy": "",
          "appeared": "2017-08-16T13:59:59Z",
          "disappeared": null,
          "acknowlegded": null,
          "solved": null,
          "system_name": "Demo 07122016",
          "system_id": 693,
          "system_device_id": 371,
          "stream": "cu351.alarm_code"
      }
  ]
  </code></pre>
  
  <p>}</p>