title: Make Karma fail test on syntax error
body: <p>When a test of ours has a syntax error we get something like this:</p>
  
  <pre><code>WARNING in ./tests/components/RequesterInfo/RequsterInfo.spec.js
  Module build failed: SyntaxError: /Volumes/dev/VisualforceCore/tests/components/RequesterInfo/RequsterInfo.spec.js: Unexpected token, expected , (34:39)
    32 |             TimeZoneSidKey: 'America/Indiana/Indianapolis',
    33 |             Title: 'CTO',
  &gt; 34 |             SatisfactionLevel__c: value: 'Low',
       |                                        ^
    35 |           }
    36 |           fieldSet: {
    37 |             LanguageLocaleKey: { label: 'Language' },
  </code></pre>
  
  <p>We often miss this error as it gets swallowed up in all the output
  Can I make karma fail on a syntax error?</p>