mimic.js

var mimic = {
  history: {},
  get_history: function(k) {
    if (k in mimic.history) return mimic.history[k];
    mimic.history[k] = [];
    return mimic.history[k];
  },
  record: function(root, priv, not_recursive) {
    function inspect(obj, path) {
      _.each(obj, function(v, k) {
        if (!priv && k.match(/^_.*/)) return
        var current_path = path ? path + '.' + k : k;
        if (_.isFunction(v)) {
          obj[k] = _.wrap(v, _.bind(mimic._report, this, current_path));
          return
        }
        if (!not_recursive) return inspect(v, current_path);
      });
    }
    inspect(root);
  },
  _report: function(name, fn) {
    var resp = fn.apply(this, _.toArray(arguments).slice(2));
    mimic.get_history(name).push({ name: name, resp: resp });
    return resp;
  }
};