IE MAKES LOGGING IN JAVASCRIPT SO FUN.

logger.js

define(function () {
  var exports = {};
  funcs = ["log", "warn", "error", "group", "groupEnd"];
  for (var i in funcs) {
    exports[funcs[i]] = (function (func) {
      return function () {
        if (typeof(console) !== "undefined" && funcs[i] in console) {
          console[func].apply(console, arguments);
        }
      };
    }(funcs[i]));
  }
  return exports;
});