onerr

Simple error handling utility function

npm install onerr
4 downloads in the last week
8 downloads in the last month

onerr

Simple error handling utility function

How to install

npm install onerr

Usage

JavaScript

This module allows you to replace the common ideom

function doSomethingAsync(arg, callback) {
  // [...]
  goFetchSomethingAsync(arg, function(err, data) {
    if (err != null) {
      return callback(err);
    }
    // Do something with data
  });
}

with

var onerr = require("onerr");

function doSomethingAsync(arg, callback) {
  // [...]
  goFetchSomethingAsync(arg, onerr(callback, function(data) {
    // Do something with data
  }));
}

CoffeeScript

It looks even nicer in CoffeeScript:

onerr = require "onerr"

middlewareFunction = (req, res, next) ->
  # [...]
  goFetchSomethingAsync req, onerr next, (data) ->
    # Do something with data
npm loves you