60 lines
1.4 KiB
Markdown
60 lines
1.4 KiB
Markdown
# es6-error
|
|
|
|
[](https://www.npmjs.com/package/es6-error)
|
|
[](https://travis-ci.org/bjyoungblood/es6-error)
|
|
|
|
An easily-extendable error class for use with ES6 classes (or ES5, if you so
|
|
choose).
|
|
|
|
Tested in Node 4.0, Chrome, and Firefox.
|
|
|
|
## Why?
|
|
|
|
I made this because I wanted to be able to extend Error for inheritance and type
|
|
checking, but can never remember to add
|
|
`Error.captureStackTrace(this, this.constructor.name)` to the constructor or how
|
|
to get the proper name to print from `console.log`.
|
|
|
|
## ES6 Usage
|
|
|
|
```javascript
|
|
|
|
import ExtendableError from 'es6-error';
|
|
|
|
class MyError extends ExtendableError {
|
|
// constructor is optional; you should omit it if you just want a custom error
|
|
// type for inheritance and type checking
|
|
constructor(message = 'Default message') {
|
|
super(message);
|
|
}
|
|
}
|
|
|
|
export default MyError;
|
|
```
|
|
|
|
## ES5 Usage
|
|
|
|
```javascript
|
|
|
|
var util = require('util');
|
|
var ExtendableError = require('es6-error');
|
|
|
|
function MyError(message) {
|
|
message = message || 'Default message';
|
|
ExtendableError.call(this, message);
|
|
}
|
|
|
|
util.inherits(MyError, ExtendableError);
|
|
|
|
module.exports = MyError;
|
|
```
|
|
|
|
### Known Issues
|
|
|
|
- Uglification can obscure error class names ([#31](https://github.com/bjyoungblood/es6-error/issues/31#issuecomment-301128220))
|
|
|
|
#### Todo
|
|
|
|
- Better browser compatibility
|
|
- Browser tests
|