<h1 dir="auto">Feature request</h1>
<p dir="auto">Is it possible to use next.config.ts instead of next.config.js?<br>
Currently none of the typescript examples use typescript in the config file. Is it even possible?</p>
<p dir="auto"><a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/resir014/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/resir014">@resir014</a></p>
<p dir="auto">Hi, I'm developing web using Next and Express. Currently i'm facing issue when applying moment locale on the web. It shows that mark up that generated on server and client is different (Screenshot attached).<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/5382429/28250611-268901fa-6a97-11e7-8187-588e3b260cb9.png"><img width="1394" alt="Different markup on server and client" src="https://user-images.githubusercontent.com/5382429/28250611-268901fa-6a97-11e7-8187-588e3b260cb9.png" style="max-width: 100%;"></a><br>
I'm applying moment's locale on <strong>custom _document.js</strong>. How to fix this issue?</p>


<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have searched the <a href="https://github.com/zeit/next.js/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h2 dir="auto">Expected Behavior</h2>


<p dir="auto">It should generate same markup on server and client</p>
<h2 dir="auto">Current Behavior</h2>


<p dir="auto">It generate different markup on server and client</p>
<h2 dir="auto">Steps to Reproduce (for bugs)</h2>


<p dir="auto"><a href="https://github.com/adrianha/next-routes-demo">Repository</a></p>
<h2 dir="auto">Context</h2>


<h2 dir="auto">Your Environment</h2>

<table role="table">
<thead>
<tr>
<th>Tech</th>
<th>Version</th>
</tr>
</thead>
<tbody>
<tr>
<td>next</td>
<td>^3.0.1-beta.8</td>
</tr>
<tr>
<td>express</td>
<td>^4.15.3</td>
</tr>
<tr>
<td>moment</td>
<td>^2.18.1</td>
</tr>
<tr>
<td>react</td>
<td>^15.6.1</td>
</tr>
<tr>
<td>node</td>
<td>v6.11.0</td>
</tr>
<tr>
<td>OS</td>
<td>macOS Sierra 10.12.1</td>
</tr>
<tr>
<td>browser</td>
<td>Chrome Version 59.0.3071.115</td>
</tr>
</tbody>
</table>