title: If property does not exist
body: <p>I am filtering the data through arr.map() and then sendig that data to a React-Table, since my API returns several properties which i will not be using for now.</p>
  
  <pre class="lang-js prettyprint-override"><code>const filteredPuntedIssues = this.state.puntedIssues.map(item =&gt; ({
    assignee: item ? item.assigneeName : 'Empty',
    id: item ? item.id : 'Empty',
    key: item ? item.key : 'Empty',
    type: item ? item.typeName : 'Empty',
    summary: item ? item.summary : 'Empty',
    storyPoints: item.estimateStatistic ? item.estimateStatistic.statFieldValue.value : '0',
  }));
  </code></pre>
  
  <p>This works if any of the values are null, but if somewhere in my API one of those properties dont exist, it turns out to be empty, and i want to make it a string ex: "Does not Exists"</p>