hidden_class.js

// perhaps microbenchmarking here make no sense
// can anyone provide a more meaningful cases?

// about hidden class: https://developers.google.com/v8/design#prop_access
function withoutHiddenClass() {}
withoutHiddenClass.prototype.timeout = timeout;
withoutHiddenClass.prototype.url = url;
withoutHiddenClass.prototype.type = type;

function withHiddenClass() {
  this._timeout = 0;
  this._url = "";
  this._type = "";
}
withHiddenClass.prototype.timeout = timeout;
withHiddenClass.prototype.url = url;
withHiddenClass.prototype.type = type;

function timeout(timeout) {
  this._timeout = timeout;
}

function url(url) {
  this._url = url;
}

function type(type) {
  this._type = type;
}

const cases = [
  {
    name: "withoutHiddenClass",
    fn: function () {
      var obj = new withoutHiddenClass();
      obj.timeout(1);
      obj.url("google.com");
      obj.type("get");
    },
  },
  {
    name: "withHiddenClass",
    fn: function () {
      var obj = new withHiddenClass();
      obj.timeout(1);
      obj.url("google.com");
      obj.type("get");
    },
  },
];

exports = module.exports = { cases };