error-system



Your custom errors in your JavaScript code!

Inspired by node-errno.

Based on errors in bitcore.

Example

$3

``js
var errorSystem = require('error-system')
var RequestError = errorSystem.createError('RequestError', 'Code: {0} (url: {1})')
var request = require('request')

var url = 'https://github.com/notfound11'
request(url, function (error, response) {
if (error === null && response.statusCode !== 200) {
error = new RequestError(response.statusCode, url)
}

if (error !== null) {
// ErrorRequestError: Code: 404 (url: https://github.com/notfound11)
console.error(error.stack.split('\n')[0])
}
})
`

$3


`js
var errorSystem = require('error-system')
var RequestError = errorSystem.extend(Error, [{
name: 'RequestError',
message: 'Code: {0} (url: {1})',
errors: [
{
name: 'NotFound',
message: 'Code: 404 (url: {0})'
}
]
}])
var request = require('request')

var url = 'https://github.com/notfound11'
request(url, function (error, response) {
if (error === null && response.statusCode !== 200) {
if (response.statusCode === 404) {
error = new RequestError.NotFound(url)
} else if (response.statusCode !== 200) {
error = new RequestError(response.statusCode, url)
}
}

if (error !== null) {
// ErrorRequestErrorNotFound: Code: 404 (url: https://github.com/notfound11)
console.error(error.stack.split('\n')[0])
}
})
``

License

Code released under the MIT license.