<p dir="auto">I am using TypeScript in an Electron app and trying to use the <code class="notranslate">Chip</code> component in <code class="notranslate">material-ui-next</code> and it does not recognize the <code class="notranslate">onDelete</code> prop, but the <a href="https://material-ui-next.com/api/chip/" rel="nofollow">API</a> indicates it should.</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/mui-org/material-ui/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">I should not receive error</p>
<h2 dir="auto">Current Behavior</h2>

<p dir="auto">Receiving error: <code class="notranslate">TS2339: Property 'onDelete' does not exist on type 'IntrinsicAttributes &amp; ChipProps &amp; { children?: ReactNode; }'.</code></p>
<h2 dir="auto">Steps to Reproduce (for bugs)</h2>

<ol dir="auto">
<li></li>
<li></li>
<li></li>
<li></li>
</ol>
<h2 dir="auto">Context</h2>

<p dir="auto">Tying to use Chip component in <code class="notranslate">material-ui-next</code></p>
<h2 dir="auto">Your Environment</h2>

<table role="table">
<thead>
<tr>
<th>Tech</th>
<th>Version</th>
</tr>
</thead>
<tbody>
<tr>
<td>Material-UI</td>
<td>1.0.0</td>
</tr>
<tr>
<td>React</td>
<td>16.2.0</td>
</tr>
<tr>
<td>browser</td>
<td>Chromium (Electron)</td>
</tr>
<tr>
<td>TypeScript</td>
<td>2.6.2</td>
</tr>
</tbody>
</table>
<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/mui-org/material-ui/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">Sometimes the value for the 'title' could be calculated and may be set to null.  In this instance the tooltip should not be shown.</p>
<h2 dir="auto">Current Behavior</h2>
<p dir="auto">Tooltip is shown regardless of whether there is a value for 'title' or not</p>
<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto"><a href="https://codesandbox.io/s/z65pow4773" rel="nofollow">https://codesandbox.io/s/z65pow4773</a></p>
<p dir="auto">I believe putting the following code <a href="https://github.com/mui-org/material-ui/blob/ddde3c93235f170d2781749a8907005fc12372eb/src/Tooltip/Tooltip.js#L151">here</a> would resolve the issue:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="if(this.props.title === null || this.props.title === undefined || this.props.title === &quot;&quot;)
   return;"><pre class="notranslate"><code class="notranslate">if(this.props.title === null || this.props.title === undefined || this.props.title === "")
   return;
</code></pre></div>