Safe Callback

Handle asynchronous callback errors safely and easily

Install

Backend

1. Install Node.js
2. npm install --save safecallback

Frontend

1. See Browserify

Usage

JavaScript

// Before
var getFileContentsUpperCased = function(path,next){
	require('fs').readFile(path, function(err,data){
		if(err)  return next(err)  // annoying check
		return next(null, data.toString().toUpperCase())
	})
}

// After
var safeCallback = require('safecallback')
var getFileContentsUpperCased = function(path,next){
	require('fs').readFile(path, safeCallback(next, function(err,data){
		return next(null, data.toString().toUpperCase())
	}))
}

CoffeeScript

# Before
getFileContentsUpperCased = (path,next) ->
	require('fs').readFile path, (err,data) ->
		return next(err)  if err  # annoying check
		return next(null, data.toString().toUpperCase())

# After
safeCallback = require('safecallback')
getFileContentsUpperCased = (path,next) ->
	require('fs').readFile path, safeCallback next, (err,data) ->
		return next(null, data.toString().toUpperCase())

History

You can discover the history inside the History.md file

License

Licensed under the incredibly permissive MIT License
Copyright © 2013+ Bevry Pty Ltd [email protected]