How to do AOP with node.js?

Question

I have a little problem doing some AOP with node.js: Let\'s say I have an application in a script called server.js, and I want to monitor its functions.

Here is

Answer 1

A naive attempt would look something like this.

var before = function(object, functionName, action) {
  var oldFunction = object.functionName;
  var newFunction = function() {
    action();
    oldFunction();
  };
  object.functionName = oldFunction;
}

var after = function(object, functionName, action) {
  var fn = object.functionName;
  var after = function() {
    fn();
    action();
  };
  object.functionName = oldFunction;
}

JS is very flexible; you could easily improve on this by storing the after and before actions and adding/removing them as required, but at the very least this should do what you want (albeit not in a very good manner).