Opal-Estate-Pro/node_modules/make-error-cause/README.md
2019-09-13 11:27:52 +07:00

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# Make Error Cause
[![NPM version][npm-image]][npm-url]
[![NPM downloads][downloads-image]][downloads-url]
[![Build status][travis-image]][travis-url]
[![Test coverage][coveralls-image]][coveralls-url]
> Make your own nested error types!
## Features
* Compatible with Node and browsers
* Works with `instanceof`
* Use `error.stack` and `error.name`
* Output full cause with `toString`
* Extends [make-error](https://github.com/julien-f/js-make-error)
## Installation
```sh
npm install make-error-cause --save
```
## Usage
Usages from [`make-error`](https://github.com/julien-f/js-make-error#usage). The only difference is that errors accept a second argument known as the error "cause". The cause is used to wrap original errors with more intuitive feedback - for instance, wrapping a raw database error in a HTTP error.
```js
const CustomError = makeErrorCause('CustomError')
const cause = new Error('boom!')
const error = new CustomError('something bad', cause)
error.toString() //=> "CustomError: something bad\nCaused by: boom!"
error.stack // Works!
error.cause.stack // Handy!
```
## Attribution
Inspired by [`verror`](https://www.npmjs.com/package/verror), and others, but created lighter and without core dependencies for browser usage.
## License
Apache 2.0
[npm-image]: https://img.shields.io/npm/v/make-error-cause.svg?style=flat
[npm-url]: https://npmjs.org/package/make-error-cause
[downloads-image]: https://img.shields.io/npm/dm/make-error-cause.svg?style=flat
[downloads-url]: https://npmjs.org/package/make-error-cause
[travis-image]: https://img.shields.io/travis/blakeembrey/make-error-cause.svg?style=flat
[travis-url]: https://travis-ci.org/blakeembrey/make-error-cause
[coveralls-image]: https://img.shields.io/coveralls/blakeembrey/make-error-cause.svg?style=flat
[coveralls-url]: https://coveralls.io/r/blakeembrey/make-error-cause?branch=master