title: The property 'jqGrid' does not exist on value of type 'JQuery'
body: <p>I am using Typescript with jqGrid and jQuery.</p>
  
  <p>On the following line:</p>
  
  <pre><code>jQuery(this).jqGrid('editGridRow', rowid, {
      ...
  </code></pre>
  
  <p>I get the message:</p>
  
  <blockquote>
    <p>The property 'jqGrid' does not exist on value of type 'JQuery'.</p>
  </blockquote>
  
  <p>Any ideas on how to correct this problem?</p>