Method makeHidden

lib/util.js:121–138

* Make a configuration property hidden so it doesn't appear when enumerating * elements of the object. * * * The property still exists and can be read from and written to, but it won't * show up in for ... in loops, Object.keys(), or JSON.stringify() type methods. *

(object, property, value)

   * @return {object} - The original object is returned - for chaining.
   */
  static makeHidden(object, property, value) {
    // If the new value isn't specified, just mark the property as hidden
    if (typeof value === 'undefined') {
      Object.defineProperty(object, property, {
        enumerable: false,
        configurable: true
      });
    } else {
      // Otherwise set the value and mark it as hidden
      Object.defineProperty(object, property, {
        value: value,
        enumerable: false,
        configurable: true
      });
    }

    return object;
  }

  /**
   * Make a javascript object immutable (assuring it cannot be changed from the current value)