Logging on an object's methods

gistfile1.js

var protos = Object.getPrototypeOf(this);
Object.keys(protos).forEach(function(key) {
  if (typeof this[key] === 'function' && key !== 'constructor') {
    var fn = this[key];
    this[key] = function() {
      var name = this.name ? this.name + '.' : '';
      var identity = name + key;
      console.time(identity);
      var ret = fn.apply(this, arguments);
      console.timeEnd(identity);
      return ret;
    };
  }
}, this);