title: Is there a typescript List<> and/or Map<> class/library?
body: <p>Did they add a runtime List&lt;> and/or Map&lt;> type class to typepad 1.0? And if not, is there a solid library out there someone wrote that provides this functionality?</p>
  
  <p>And in the case of List&lt;>, is there a linked list where the elements in the list have the next/prev property? We need a list where from an element object (ie not from an iterator), we can get the next and previous elements in the list (or null if it's the first/last one).</p>