verifyCallback.js

A very, very small node/javascript module to verify if a callback is a callback

Why?

I found that in accordance to Node and javascript principles I wanted to make sure I wrote my code with proper callbacks. Being a bit old school I tend to prefer to do things design by contract, making sure the inputs are correct and fail early, after all what's a single extra function call + equal operator cost in performance compared to debugging several hours to find an invalid input.

I had a quick look around and didn't find any simple library to verify this kind of thing so here it is.

Installation

npm install verify-callback

Usage

The verifyCallback is really just a simple method so require it and call it whatever works and fits your naming sense:

var verify = require('verify-calback')

function asyncRequest(callback){

	verify(callback);
	
};

or maybe a bit more explicit

var verifyCallback = require('verify-calback')

function asyncRequest(callback){

	verifyCallback(callback);
	
};

Forking

Only a few tests, runs with mocha, I expect you'll have to have it installed globally to run:

npm install mocha -g
npm test

On NPM

https://www.npmjs.com/package/verify-callback

Promise

Using callbacks is a bit old school, please see promise for a better alternative.