custom-error
Create custom errors that inherit Error
Last updated 11 years ago
by andrezsanchez
.
MIT
·
Repository
·
Bugs
·
Original npm
·
Tarball
·
package.json
$ cnpm install custom-error
SYNC missed versions from
official npm registry.
custom-error
Create custom errors that inherit Error.
why
Extending Error is a real pain, so this library deals with the quirks, providing a clean API to extend Error that works across JS environments, including Node and browsers.
usage
Calling customError(errorTitle[, ParentError]) creates a new error class that can be called the
same way that Error is called. The new error constructor will inherit from Error, or from
ParentError if you provide it.
examples
var customError = require('custom-error');
var ApocalypseError = customError('ApocalypseError');
ApocalypseError() instanceof Error // true
ApocalypseError() instanceof ApocalypseError // true
var UnixApocalypseError = customError('UnixApocalypseError', ApocalypseError)
UnixApocalypseError() instanceof Error // true
UnixApocalypseError() instanceof ApocalypseError // true
UnixApocalypseError() instanceof UnixApocalypseError // true
if (new Date().getFullYear() === 2038) {
throw UnixApocalypseError('OH NOES')
}
Using prototype
UnixApocalypseError.prototype.year = 2038
try {
throw UnixApocalypseError()
}
catch (err) {
console.log(err.year) // 2038
}
installation
npm install custom-error
license
MIT
Current Tags
- 0.2.1 ... latest (11 years ago)
andrezsanchez