title: How to access a value in this JSON object
body: <p>I have been given a JSON object like so:    </p>
  
  <pre><code>{ [error: User test@test.com already exists]
    length: 88,
    name: 'error',
    severity: 'ERROR',
    code: 'P0001'}
  </code></pre>
  
  <p>Question: The error message seems to be an array (it is the first item wrapped in the [] brackets). <strong>How do I get hold of that value?</strong></p>