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coffeescript

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javascript

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iferr

Higher-order functions for easier error handling.

if (err) return cb(err); be gone!

Install

npm install iferr

Use

JavaScript/ES6 example

var iferr = require('iferr');

function get_friends_count(id, cb) {
  User.load_user(id, iferr(cb, user =>
    user.load_friends(iferr(cb, friends =>
      cb(null, friends.length)
    ))
  ))
}

JavaScript/ES5 example

var iferr = require('iferr');

function get_friends_count(id, cb) {
  User.load_user(id, iferr(cb, function(user) {
    user.load_friends(iferr(cb, function(friends) {
      cb(null, friends.length)
    }))
  }))
}

CoffeeScript example

iferr = require 'iferr'

get_friends_count = (id, cb) ->
  User.load_user id, iferr cb, (user) ->
    user.load_friends iferr cb, (friends) ->
      cb null, friends.length

(TODO: document tiferr, throwerr and printerr)

License

MIT

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shesek / iferr