Package Exports

errno

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (errno) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

node-errno

libuv errno details exposed. Available in npm as errno

Ever find yourself needing more details about NodeJS errors? Me too, so node-errno contains the errno mappings direct from libuv so you can use them in your code.

By errno:

require('errno').errno[3]
// → {
//     "errno": 3,
//     "code": "EACCES",
//     "description": "permission denied"
//   }

By code:

require('errno').code.ENOTEMPTY
// → {
//     "errno": 53,
//     "code": "ENOTEMPTY",
//     "description": "directory not empty"
//   }

Make your errors more descriptive:

var errno = require('errno')

function errmsg(err) {
    var str = 'Error: '
    // if it's a libuv error then get the description from errno
    if (errno.errno[err.errno]) {
        str += errno.errno[err.errno].description
    } else {
        str += err.message
    }
    
    // if it's a `fs` error then it'll have a 'path' property
    if (err.path) {
        str += ' [' + err.path + ']'
    }
    return str
}

var fs = require('fs')

fs.readFile('thisisnotarealfile.txt', function (err, data) {
    if (err)
        return console.log(errmsg(err))
})

Made available under the MIT licence:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.