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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Add Promise benchmark to JetStream"
   href="https://bugs.webkit.org/show_bug.cgi?id=152819">152819</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Add Promise benchmark to JetStream
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>New Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jdanyow&#64;gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Modern JavaScript APIs are growing more and more Promise heavy.  It would be awesome if the benchmark suite was enhanced to cover Promise performance.

One option would be to add a dedicated Promise benchmark.  Alternatively the pdfjs bench could be updated to use the javascript engine's built-in Promise when available.

Some links:
* [Corresponding issue for Octane benchmark](<a href="https://github.com/chromium/octane/issues/35">https://github.com/chromium/octane/issues/35</a>)
* [Bluebird Promise benchmarks](<a href="https://github.com/petkaantonov/bluebird/tree/master/benchmark">https://github.com/petkaantonov/bluebird/tree/master/benchmark</a>)
* [jsFiddle demonstrating Promise perf issues in Microsoft Edge](<a href="https://jsfiddle.net/jdanyow/vj6o119n/">https://jsfiddle.net/jdanyow/vj6o119n/</a>)
* [Microsoft Edge user voice issue](<a href="https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/11329845-improve-promise-implementation-performance">https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/11329845-improve-promise-implementation-performance</a>)

Let me know what you think- I'm willing to work on a PR if you want to provide some direction on this.</pre>
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