<link rel="import" href="../polymer/polymer.html">
<script>
  function AsyncAlpha() {
    // Queue a task:
    Polymer.Base.async(function() {
      console.log('alpha');

      // Cause a second task to be queued:
      AsyncBeta();

      // Throw an exception before the first task returns:
      throw new Error('ANY ERROR');
    });
  }

  function AsyncBeta() {
    Polymer.Base.async(function() {
      console.log('beta');
    });
  }

  AsyncAlpha();
</script>