Vulcan/packages/telescope-notifications/lib/client/templates/notification_item.html

<template name="notificationItem">
  <li class="notification-item {{#if read}}read{{/if}}">
    <span class="notification-timestamp">{{timeAgo timestamp}}</span>
    <div class="notification-html">
      {{{notificationHTML}}}
    </div>
  </li>
</template>