Do not use lazy requires where not needed.

trace/trace.ts

@@ -1,5 +1,5 @@
 import definition = require("trace");
-import * as typesModule from "utils/types";
+import * as types from "utils/types";
 
 var _enabled = false;
 var _categories = {};
@@ -137,8 +137,6 @@ class ConsoleWriter implements definition.TraceWriter {
             return;
         }
 
-        var types: typeof typesModule = require("utils/types");
-
         var msgType;
         if (types.isUndefined(type)) {
             msgType = messageType.log;