Interesting quirks in the TypeScript compiler. Will invoke closures instead of vanilla functions.

gistfile1.js

(function (workers) {
  var Waiter = (function () {
      function Waiter(messageid, delegate) {
        this.messageid = messageid;
        this.delegate = delegate;
      }
      return Waiter;
    })();
  workers.Waiter = Waiter;
})(appex.workers || (appex.workers = {}));