text: //// [genericReversingTypeParameters.ts]
  class BiMap<K, V> {
      private inverseBiMap: BiMap<V, K>;
      public get(key: K): V { return null; }
      public inverse(): BiMap<V, K> { return null; }
  }
  
  var b = new BiMap<string, number>();
  var r1 = b.get(''); 
  var i = b.inverse(); // used to get the type wrong here.
  var r2b = i.get(1); 
  
  //// [genericReversingTypeParameters.js]
  var BiMap = (function () {
      function BiMap() {
      }
      BiMap.prototype.get = function (key) { return null; };
      BiMap.prototype.inverse = function () { return null; };
      return BiMap;
  })();
  var b = new BiMap();
  var r1 = b.get('');
  var i = b.inverse(); // used to get the type wrong here.
  var r2b = i.get(1);
  