Initial cut for a development server

test/codegen/expect/html_input_d/html_input_d.js

 var html_input_d;
 (function(html_input_d) {
   'use strict';
   // Function fib: (int) → int
   function fib(n) {
-    return _fib(n, new core.Map());
-  }
-  // Function _fib: (int, Map<int, int>) → int
-  function _fib(n, seen) {
-    if (dart.notNull(n === 0) || dart.notNull(n === 1))
-      return 1;
-    if (seen.get(n) !== null)
-      return seen.get(n);
-    seen.set(n, _fib(n - 1, seen) + _fib(n - 2, seen));
-    return seen.get(n);
+    return dart.notNull(n === 0) || dart.notNull(n === 1) ? 1 : fib(n - 1) + fib(n - 2);
   }
   // Exports:
   html_input_d.fib = fib;
 })(html_input_d || (html_input_d = {}));