Hemanth.HM

A Computer Polyglot, CLI + WEB ♥'r.

Method Deprecated Warning in Nodejs

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Recently was tweaking a node module and had to warn users on deprecated methods, truns out it's damn easy with util module.

Pinch of code :

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#!/usr/bin/env node
#__filename = hello.js

util=require('util');

exports.yo = function(){
    console.log("yo yo!");
};

exports.hello = util.deprecate(function() {
  return exports.yo();
}, '`hello` is depreciated, please use `yo` instead.');

Let's import hello.js and try invoking hello :

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> greet = require("hello");
{ yo: [Function], hello: [Function: deprecated] }
> greet.hello()
`hello` is depreciated, please use `yo` instead.
yo yo!

Happy hacking!

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