 
  
  
 
| Package | deprecated | 
| Description | Tool for deprecating things | 
| Node Version | >= 0.9 | 
var oldfn = function(a,b) {
  return a+b;
};
// returns a new wrapper function that logs the deprecated function once
var somefn = deprecated('dont use this anymore', console.log, oldfn);
var someobj = {};
// set up a getter/set for field that logs deprecated message once
deprecated('dont use this anymore', console.log, someobj, 'a', 123);
console.log(someobj.a); // 123