title: Does office.js support the shapes collection?
body: <p>Is the "shapes" collection supported in office.js?  If so, how do I iterate around it?  Below is the equivalent C# code I'm trying to achieve in office.js</p>
  
  <pre><code>foreach (Word.Shape shape in document.Shapes)
  {
     if (shape.Type == Microsoft.Office.Core.MsoShapeType.msoTextBox)
     {
         string shapeText = shape.TextFrame.TextRange.Text;
     }   
  }
  </code></pre>