How to Deep Freeze by JavaScript

Code of Deep Freeze

 function deepFreeze(o) {
    Object.freeze(o);

    var objIsFunction = typeof o === 'function';

    Object.getOwnPropertyNames(o).forEach(function (prop) {
      if (o.hasOwnProperty(prop)
        && o[prop] !== null
        && (typeof o[prop] === "object" || typeof o[prop] === "function")
        && (objIsFunction ? prop !== 'caller' && prop !== 'callee' && prop !== 'arguments' : true)
        && !Object.isFrozen(o[prop])) {
        deepFreeze(o[prop]);
      }
    });

    return o;
  };