Object.watch() を使用せずにクロスブラウザーのオブジェクト監視を実装するにはどうすればよいですか?

<code class="javascript">var myObject = {
  property1: 'value1',
  property2: 'value2'
};

// Create an observer instance
var observer = new Observer(myObject);

// Define a callback function to respond to changes
observer.watch('property1', function(name, oldValue, newValue) {
  console.log('Property ' + name + ' changed from ' + oldValue + ' to ' + newValue);
});

// Update the property and trigger the callback
myObject.property1 = 'new value';</code>

<code class="javascript">var createWatcher = function(obj, prop, callback) {
  var previous = obj[prop];
  Object.defineProperty(obj, prop, {
    get: function() {
      return previous;
    },
    set: function(value) {
      var old = previous;
      previous = value;

      // Call the callback, returning new value
      return callback.apply(obj, [prop, old, value]);
    },
    enumerable: true,
    configurable: true
  });
};</code>